Subcutaneous Injection: What Is It and How to Give One Ro B 12 (Methylcobalamin) Therapy MedClub by Dr Jenn How SubQ Injections Like B12 and NAD+ Fit Your Routine Olympia Pharmaceuticals How to inject vitamin B12 into your belly Learn how to administer your own SubQ (subcutaneous) injections at home with confidence. Our step by step guide covers everything you need to know, from preparing your supplies to safely injecting the medication. Our What Happens If You Inject B12 Into Fat? PA Relief